CN100372398C

CN100372398C - Method for realizing sharing link for digital cluster system

Info

Publication number: CN100372398C
Application number: CNB2004100886930A
Authority: CN
Inventors: 罗雄
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2004-11-15
Filing date: 2004-11-15
Publication date: 2008-02-27
Anticipated expiration: 2024-11-15
Also published as: WO2006050675A1; CN1777301A

Abstract

The present invention relates to a method for realizing a share link in a digital clustering system. The present invention is characterized in that after receiving a clustering call to set up a request, a wireless access network (RAN) judges that if the current call is the first call of the current call clustering group; if yes, the wireless access network sets up a link for the current call, and otherwise, the wireless access network adds the current call information in corresponding link of the call. The present invention also provides another method for realizing a share link in a digital clustering system. The method of the present invention can be used for realizing the service share link of users in the same clustering group, and accordingly the present invention saves link resource, saves set-up time of clustering calls and improves the quality of clustering services.

Description

The implementation method of shared link in the digital cluster system

Technical field

The present invention relates to service link technology in the digital cluster system, particularly the implementation method of shared link in the digital cluster system.

Background technology

At present, (PTT, Push-to-Talk) business are meant real-time point-to-point and put the multiple spot Speech Communication to be applied to collaborative work and the PTT that exchanges between team, working group, the colony.This professional half-duplex mode that adopts promptly has only a people to talk at one time, as long as pressing certain special keys, the calling party just can need not dialing and wait for the other side's off-hook to a people or one group of initiation conversation, and the conversation demand working, thus set up particular talk group rapidly.

When realizing that in CDMA, CDMA 2000 or CDMA 1X system Digital Clustering is professional, the group service data are transmitted by packet network, and portable terminal (MS) carries out the mutual of signaling and data by wireless access network (RAN) and packet network.In order to realize the transmission of data between RAN and packet network, need in the signalling interactive process of call setup, set up data link between the entity of RAN inside and between RAN and the packet network entity.In RAN inside, mainly comprise with the professional relevant entity of Processing Cluster: base station controller (BSC) and Packet Control Function (PCF) entity; And on the packet network with group service handle relevant functional entity be ptt server (PS, PTTServer).Wherein, it is packet data package that BSC is responsible for from collect mail order and data encapsulation of MS side joint, and sends it to PCF, and the while is also from PCF receiving block data bag and be assembled into traffic frame and be distributed to each MS; PCF is responsible for the signaling and the data of Packet data service are handled, and the data link is carried out whole management and control; PS calls out group service as the control centre of group service and controls, and work such as responsible Media Stream distribution.

In the prior art, BSC promptly sends the A8 request for building link to PCF when receiving trunked call foundation request, thereby both sides set up the A8 link for the call distribution link circuit resource of current request; In addition, PCF also sends group's shadowing agreement (GMP) request for building link to PS after receiving the A8 request for building link that BSC sends.Like this, RAN need set up the A8 link of RAN inside and the GMP link between RAN outside and the packet network for each user who calls out each time.

But at the converse characteristics of this particular service of cluster, above-mentioned link establishing method will bring a lot of problems to the realization of group service.Because, group service adopts the half-duplex operation mode, and the then same time has only a people to talk, and listens in order to realize a people many people that talk, talker's speech data need be sent to the PS of special disposal group service, speech data is distributed to each listener by RAN by PS.Therefore, under the same BSC in the conversation of same cluster group, the data that send at the reverse link from talker MS to PS and each the bar forward link from PS to each listener MS are identical.

Like this, if for each of same cluster group under the same BSC with setting up independently A8 link and GMP link per family, then can use a plurality of different links to transmit identical data, will waste limited link circuit resource so greatly; And because trunked call often relates to than the multi-user, if when setting up trunked call for each user's distribute links resource and set up link, will cause trunked call longer settling time, make the advantage of the professional instant messaging of PTT all gone.

Summary of the invention

In view of this, main purpose of the present invention is to provide the method for building up of shared link in a kind of digital cluster system, can set up sharing A 8 links in the trunked call, thereby saves the A8 link circuit resource, shorten trunked call settling time.

Another object of the present invention is to provide the method for releasing of shared link in a kind of digital cluster system, can realize release trunked call sharing A 8 links of having set up.

For achieving the above object, technical scheme of the present invention is achieved in that

The invention discloses the method for building up of shared link in a kind of digital cluster system, this method comprises:

After BSC among the a.RAN receives the trunked call request of setting up, judge whether current calling is that the first time trunked call of current calling cluster group under this BSC set up request, if, execution in step b then; Otherwise BSC adds current call information, process ends in the A8 link information of this calling cluster group correspondence;

B.BSC sends the Packet Control Function entity PCF of A8 request for building link to the RAN, and this PCF distributes A8 chain line after receiving this A8 request for building link, and returns this A8 chain line and give BSC; Perhaps, BSC distributes A8 chain line, and transmission comprises the A8 request for building link of this A8 chain line to PCF.

Wherein, comprise Call Control Unit CC and rm-cell RM among the described BSC; Described step a comprises: CC receives trunked call and sets up after the request, send the resource bid request to RM, RM judges according to this resource bid request whether current calling is this cluster group trunked call foundation for the first time request, if then RM indication CC sets up the A8 link, execution in step b, perhaps, RM distributes A8 chain line, returns this A8 chain line and gives CC, indication CC sets up A8 link, execution in step b; Otherwise RM adds current call information in the current cluster group of exhaling in corresponding A8 link information, and indication CC need not to set up the A8 link, finishes to work as pre-treatment; Described step b comprises: when CC received only the A8 link establishment indication of RM, CC sent the A8 request for building link to PCF, and this PCF distributes A8 chain line, and returned this A8 chain line by CC and give RM; When CC received A8 chain line that RM sends and A8 link establishment indication, CC sent and comprises the A8 request for building link of this A8 chain line to PCF.

Wherein, whether described RM indication CC sets up the method for A8 link and be: RM indicates by the resource bid acknowledge message of returning to CC.

Send the A8 request for building link to PCF at described BSC, this method further comprises: b1.PCF sends the GMP request for building link to PS, and this PS distributes GMP chain line after receiving this GMP request for building link, and returns this GMP chain line and give PCF; Perhaps, PCF distributes GMP chain line, and this GMP chain line is included in the GMP request for building link is sent to PS.

Wherein, not before the b1, this method further comprises: PCF judges whether the A8 link of current foundation is the A8 link that this cluster group is set up for the first time, if carry out described step b1 in described step; Otherwise PCF adds current call information in the information of the corresponding GMP link of this cluster group.

This method further comprises:

After trunked call that c.BSC receives discharges request, judge whether current calling is that the last trunked call of this cluster group under this BSC discharges request, if, execution in step d then; Otherwise, should call out the current call information of deletion the A8 link information of cluster group correspondence, process ends from BSC;

D.BSC sends the A8 link release that comprises A8 chain line and asks to PCF, and PCF and BSC discharge this A8 chain line that self preserves.

Wherein, comprise CC and RM among the described BSC; Described step c comprises: CC receives trunked call and discharges after the request, sends resource release request to RM; RM judges that according to this resource release request whether current calling is the last resource release request of this cluster group under self place BSC, if then RM discharges the corresponding A8 chain line of this calling, and indication CC discharges A8 link, execution in step d; Otherwise RM is the current call information of deletion from the A8 link information of this calling cluster group correspondence, finishes to work as pre-treatment; Described steps d comprises: CC sends the A8 link release that comprises described A8 chain line and asks to PCF, and this PCF discharges this A8 chain line.

Wherein, whether described RM indication CC discharges the method for A8 link and be: RM discharges acknowledge message by the resource of returning to CC and indicates.

After described PCF receives A8 link release request, this method further comprises: d1.PCF sends the release of GMP link and asks to PS, this GMP link discharges the GMP chain line that request comprises the A8 link correspondence of current request release, and PCF and PS discharge this GMP chain line.

Before described steps d 1, this method further comprises: PCF judges that whether the current A8 link that receives discharges request is that the last A8 link of this cluster group discharges request, if, execution in step d1 then; Otherwise PCF discharges the current call information of deletion the information of asking corresponding GMP link from this A8 link.

The present invention also provides the method for releasing of shared link in a kind of digital cluster system, and sharing A 8 link transmission datas are adopted in the calling of same cluster group, and this method comprises:

After BSC among the RAN receives trunked call release request, judge whether current calling is that the last trunked call of current calling cluster group under this BSC discharges request, if, then BSC sends the A8 link release that comprises A8 chain line and asks to PCF this A8 chain line that PCF and BSC release self are preserved; Otherwise BSC is the current call information of deletion from the A8 link information of this calling cluster group correspondence.

Wherein, comprise CC and RM among the described BSC; This method specifically comprises: CC receives trunked call and discharges after the request, sends resource release request to RM; RM judges that according to this resource release request whether current calling is the last resource release request of this cluster group under self place BSC, if, then RM discharges the corresponding A8 chain line of this calling, returning this A8 chain line gives CC and indicates CC to discharge the A8 link, CC sends the A8 link release that comprises described A8 chain line and asks to PCF, and this PCF discharges this A8 chain line; Otherwise RM is the current call information of deletion from the A8 link information of this calling cluster group correspondence, finishes to work as pre-treatment.

Wherein, after described PCF receives A8 link release request, this method further comprises: PCF sends the release of GMP link and asks to PS, and this GMP link discharges the GMP chain line that request comprises the A8 link correspondence of current request release, and PCF and PS discharge this GMP chain line.

Wherein, described PCF sends the GMP link and discharges and ask to the PS, this method further comprises: PCF judges whether the current A8 link that receives discharges request is the last A8 link release request of this cluster group, if then PCF transmission GMP link discharges and asks to PS; Otherwise PCF discharges the current call information of deletion the information of asking corresponding GMP link from this A8 link.

By such scheme as can be seen, key of the present invention is: RAN is after receiving trunked call foundation request, judge at first whether current calling is the setup requests first time of current calling cluster group, if the link that current calling uses this cluster group to set up communicates; Otherwise be the new link of current call setup; RAN judges at first then whether current calling is the last call release request of current calling cluster group, if discharge this calling link corresponding after receiving trunked call release request; Otherwise only discharge the information of current calling in this calling respective links.

Therefore, the implementation method of shared link in the digital cluster system provided by the present invention, can realize shared same A8 link of calling of same cluster group under the same BSC, and the all-calls of same set group is shared same GMP link under the same PCF, thereby trunked call set up can significantly reduce link circuit resource in the process take and save calling establishment time delay, make the PTT advantage of PTT business be able to real realization.

Description of drawings

Fig. 1 sets up sharing A 8 links one preferred embodiment handling process schematic diagram in the inventive method;

Fig. 2 discharges sharing A 8 links one preferred embodiment handling process schematic diagram in the inventive method;

Fig. 3 sets up in the inventive method to share GMP link one preferred embodiment handling process schematic diagram;

Fig. 4 discharges in the inventive method to share GMP link one preferred embodiment handling process schematic diagram;

Fig. 5 sets up sharing A 8 links and shared GMP link one preferred embodiment handling process schematic diagram in the inventive method.

Embodiment

The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.

The implementation method of shared link can be applicable to the process of setting up of sharing A 8 links and/or shared GMP link in the digital cluster system disclosed by the invention, wherein, be call setup sharing A 8 links of the same cluster group under the same BSC, for the call setup of the same cluster group under the same PCF is shared the GMP link; And on the basis of call setup shared link that is same cluster group, the present invention also provides the method for releasing of sharing A 8 links and/or shared GMP link.Below in conjunction with accompanying drawing the A8 and/or the GMP shared link foundation/dispose procedure of the inventive method are described in detail.

Fig. 1 sets up sharing A 8 links one preferred embodiment handling process schematic diagram in the inventive method.Wherein, the A8 link is the service link between BSC and the PCF, and BSC mainly comprises Call Control Unit (CC) and rm-cell (RM); When setting up calling, be responsible for the signaling process of call flow by CC, reception/transmission setup requests, sending resource bid/release asks to RM, carry out interacting message with external entity, preserve cluster group id and user profile among the CC, be responsible for the distribution and the management of business processing resources, A8 link circuit resource, and preserve cluster group information by RM.A8 link establishment process as shown in Figure 1 is by the CC among the BSC, RM, and PCF finishes jointly, and concrete treatment step comprises:

The trunked call request of setting up that step 101:CC receives MS sends resource bid request Resource Apply Request to RM afterwards.Here, the request of setting up of described trunked call can for the beginning call for ask, page response or add group calling request etc., this trunked call is set up in the request and is comprised: information such as cluster group id, user ID; Comprise in the described Resource Apply Request message: information such as cluster group id.

Cluster group id in the step 102:RM read step 101 described Resource Apply Request message, according to the cluster group information of self preserving, judge the request of setting up of the current trunked call that receives whether be under self place BSC this cluster group for the first time trunked call set up request, if then confirm that in the resource bid of preparing to return indication CC is set up upright new A8 link for this cluster in the Resource Apply Confirm message; Otherwise indication CC need not to set up upright A8 link into this cluster in preparing the Resource Apply Confirm message of returning.

And, when the trunked call that receives when RM judgement is set up non-this cluster group of request trunked call is set up request for the first time, also in the A8 link information that this cluster group of self preserving has been set up, add current call information simultaneously, such as: in the A8 link user information corresponding that this cluster group has been set up, add the user of current calling etc., thereby current calling can be shared the A8 link that this cluster group has been set up under this BSC.

Wherein, the cluster group information of RM preservation comprises: cluster group id, cluster group activate the mapping relations between situation, user profile, the A8 link information etc.Therefore, RM according to user profile and/or cluster group activate the request of setting up of trunked call that situation and/or the judgement of A8 link information receive whether be this cluster group for the first time trunked call set up request, if do not have the user to connect and/or the cluster group is not activated and/or does not set up the A8 link, illustrate that this is that trunked call is set up request for the first time.

Here, the described method of whether founding the A8 link for this cluster establishment by Resource Apply Confirm message indication CC can comprise: one, indicate by fill invalid or effective A8 chain line (A8 Traffic ID) in this message, two, in this message flag bit being set indicates or the like, the method of concrete indication has multiple, and the present invention does not limit.

Step 103:RM returns Resource ApplyConfirm message according to the described judged result of step 102 to CC, indicates whether to set up upright A8 link for this cluster by this message.

Step 104:CC receiving step 103 described Resource Apply Confirm message, if this message indication need be set up upright A8 link for this cluster, then CC sends A8 request for building link A9-Setup-A8 message to the PCF that this BSC connected, and the A8 link is set up in request; If this message indication need not to set up upright A8 link into this cluster, then finish to work as pre-treatment.

Step 105:PCF receives after the described A9-Setup-A8 message of step 104, be the new A8 Traffic ID of this cluster set of dispense under the current calling BSC, thereby be A8 link assignment resource, and this A8 Traffic ID is included in the A8 link connects in the A9-Connect-A8 message and return to CC.

Here, the cluster group information of preserving among the PCF comprises at least: the mapping relations between cluster group, A8 link, the GMP link, if this PCF is connected with a plurality of BSC, then comprise at least in this cluster group information: the mapping relations between cluster group, BSC, A8 link, the GMP link.

A8 Traffic ID in the step 106:CC read step 105 described message, and this A8Traffic ID is included in the resource authorization request Resource Affirm Request message sends to RM, RM is kept at the A8 Traffic ID in this message in this cluster group information, in this newly-established A8 link information, add current call information simultaneously, as: user profile etc.

Step 107:RM returns resource confirmation affirmation Resource Affirm Confirm message and gives CC, finishes the A8 link establishment in the call establishment.

In the foregoing description, when setting up the A8 link, distribute A8 Traffic ID by PCF, in actual applications, also can distribute A8 Traffic ID by RM, then RM distributes A8 Traffic ID in the step 102 after judgement, and it is included in step 103 and the described message of step 104 sends to PCF, PCF is added into this A8 Traffic ID in the cluster group information of self preserving then, and step 105 to the described message of step 107 also can not carried A8 Traffic ID.

Because, PCF will initiate GMP link establishment process after receiving A9-Setup-A8 message, BSC just will distribute interface-free resources after obtaining newly assigned A8 Traffic ID simultaneously, when the GMP of PCF link establishment is failed, the A8 link circuit resource that has distributed, interface-free resources etc. will be released to restart to set up and call out.Therefore, if distribute the A8 Traffic ID just very may be when the GMP link establishment is failed by RM, interface-free resources that BSC has been current call distribution, the interface-free resources of this sub-distribution just is wasted like this, and interface-free resources is the most valuable in wireless communication system, and the interface-free resources waste in the call establishment will influence the operation of other business.Under the situation of interface-free resources anxiety, in order to guarantee effective utilization of interface-free resources, preferable mode is to be distributed A8 Traffic ID and sent to RM when the GMP link is successfully set up by PCF.

By the described processing of Fig. 1 as seen, use the inventive method, BSC and PCF are the new A8 link of the call setup first time in the same cluster group under the same BSC when setting up trunked call, and dispose same A8 link for the subsequent voice calls of this cluster group under this BSC.Based on this kind sharing A 8 link establishing methods, when MS made a call dispose procedure, the dispose procedure of this kind sharing A 8 links as shown in Figure 2.

Fig. 2 discharges sharing A 8 links one preferred embodiment handling process schematic diagram for the inventive method, and its concrete treatment step comprises:

Step 201:CC sends resource release request ResourceRelease Request message to RM after receiving trunked call release request, comprises information such as cluster group id, user ID in this message.Here, described trunked call discharge request can for: withdraw from group calling request, terminating group request etc.

The step 202:RM cluster group information that inquiry self is preserved according to the cluster group id in the Resource Release Request message that receives, judge that whether the current trunked call that receives discharges request is that the last trunked call of this cluster group discharges request under self place BSC, if, then discharge and confirm that indication CC need discharge the current corresponding A8 link of calling out in the Resource Release Confirm message in the resource of preparing to return, and from this cluster group information that self preserves the A8 Traffic ID of this A8 link correspondence of deletion and user profile etc., thereby discharge self A8 link circuit resource; Otherwise indication CC need not to discharge the current corresponding A8 link of calling out in preparing the Resource Release Confirm message of returning, and from the A8 link information of this cluster group information of self preserving the current call information of deletion, such as user of the current calling of deletion or the like from this A8 link user information corresponding.

Here, describedly indicate whether need to discharge current method of calling out corresponding A8 link by Resource Release Confirm message and can comprise: one, indicate by in this message, filling invalid or effective A8 Traffic ID, two, in this message flag bit being set indicates or the like, the method of concrete indication has multiple, and the present invention does not limit.

Wherein, RM is according to A8 link information and/or user's connection situation etc. in this cluster group information of self preserving, whether adjudicate the current trunked call release request that receives is that the last trunked call of this cluster group discharges request, if the corresponding user of current trunked call release request is last user of this cluster group connection or is last calling of current calling corresponding A 8 link informations, illustrate that this is that last trunked call release is asked.

Step 203:RM returns Resource ReleaseConfirm message according to the described judged result of step 202 to CC.

Here, if the message that RM returns indication needs to discharge the current corresponding A8 link of calling out, the A8 Traffic ID that then also comprises in the step 202 in this message to be deleted.

Step 204:CC receiving step 203 described Resource Release Confirm message, if this message indication needs to discharge the current corresponding A8 link of calling out, then CC is included in the A8 Traffic ID in the described message of step 203 in the A8 link release request A9-Release-A8 message, be sent to the PCF that this BSC connects, request discharges this A8 link; If this message indication need not to discharge this A8 link, then finish to work as pre-treatment.

Step 205:PCF receives after the message of the described A8 of the comprising Traffic of step 204 ID, from the cluster group information of self preserving, this A8 Traffic ID is deleted, and return the release of A8 link and finish A9-Release-A8Complete message to CC, finish A8 link dispose procedure.

When the inventive method is applied to share setting up of GMP link, its handle with share the A8 link to set up process basic identical.Fig. 3 sets up in the inventive method to share GMP link one preferred embodiment handling process schematic diagram.As shown in Figure 3, specifically comprise step:

Step 301:PCF receives after the A9-Setup-A8 message that BSC sends, and judges that whether this A9-Setup-A8 message be the cluster group A8 request for building link for the first time of current calling, if, execution in step 302; Otherwise in the GMP link information of this cluster group of self preserving, add current call information, such as: in the A8 link information of the GMP link correspondence that this cluster group has been set up, add self/the newly assigned A8 Traffic of BSC ID, thereby the A8 link that this call request is set up can be shared the GMP link that this cluster group has been set up under this PCF, finishes to work as pre-treatment.

Here, may comprise the newly assigned A8 TrafficID of described BSC in the described A9-Setup-A8 message, if do not comprise newly assigned A8 Traffic ID in this A8 request for building link, then PCF self will distribute new A8 Traffic ID.

Wherein, the cluster group information of PCF preservation comprises: cluster group id, cluster group activate the mapping relations between situation, GMP link information, the A8 link information etc.Therefore, PCF activates situation and/or GMP link information and/or A8 link information according to the cluster group and adjudicates whether the A9-Setup-A8 that receives is this cluster group A8 request for building link for the first time, if the cluster group is not activated and/or does not set up the GMP link and/or do not set up the A8 link, illustrate that this is the A8 request for building link first time.

Step 302:PCF sends GMP request for building link Link Setup Request message to PS, comprises information such as cluster group id in this message.

Step 303:PS distributes new GMP chain line after receiving the described message of step 302, and in this cluster group information that self preserves, add current call information, and such as: in the GMP link information of this cluster group under this PCF, add this GMP chain line etc.Then, should newly assigned GMP chain line being included in the GMP link establishment confirms to return to PCF in the Link Setup Confirm message.PCF reads this GMP chain line again and is kept in this cluster group information from this Link Setup Confirm message that receives, add this GMP chain line in the GMP link information of this cluster group correspondence that is:.

Wherein, comprise at least in the cluster group information of preserving among the PS: the cluster group, with the mapping relations of GMP link, when a PS connects a plurality of PCF, then comprise at least in this cluster group information: the mapping relations between cluster group, PCF, the GMP link.

In the described processing of Fig. 3, GMP chain line is distributed GMP chain line by PS, this GMP chain line also can be distributed by PCF, then in the step 301, PCF distributes GMP chain line after judgement, and this GMP chain line is included in the described message of step 302 sends to PS, PS is kept at the GMP chain line in this message in the local cluster group information again, thereby finishes the process of setting up of GMP link.

Based on the described shared GMP link establishment process of Fig. 3, Fig. 4 discharges GMP shared link one preferred embodiment handling process schematic diagram in the inventive method.As shown in Figure 4, concrete treatment step comprises:

Step 401:PCF receives after the A9-Release-A8 message that BSC sends, and judges whether this request is that the last A8 link of current calling cluster group discharges request, if then execution in step 402; Otherwise the current call information of deletion from the GMP link information of this cluster group of self preserving, such as: the A8 Traffic ID that this request of deletion discharges the A8 link information of the GMP link correspondence of having set up from this cluster group, finish to work as pre-treatment.Here, comprise in the described A9-Release-A8 message: information such as cluster group id, A8 Traffic ID.

Wherein, PCF is according to A8 link information and/or GMP link information etc. in this cluster group information of self preserving, whether adjudicate the current A8 link release request that receives is that the last A8 link of this cluster group discharges request, if the A8 link that current request discharges is the last item A8 link of this cluster group connection and/or is the last item A8 link of the corresponding GMP link of this A8 link, illustrate that this is that last A8 link discharges request.

Step 402:PCF sends the GMP link and discharges request Link Release Request message to PS, the information such as GMP chain line that comprise the A8 link correspondence of described cluster group id of step 401 and request release in this message, when sending this message, the A8 Traffic ID and the corresponding GMP chain line thereof of PCF this A8 link of deletion from this cluster group information of self preserving, thus this GMP link circuit resource discharged.

Step 403:PS receives after the described message of step 402, also this GMP chain line of deletion from this cluster group information of self preserving; Then, return the GMP link to PCF and discharge affirmation LinkRelease Confirm message, finish GMP link dispose procedure.

The described processing of above-mentioned Fig. 3 is applied to trunked call when setting up, and can make the all-calls of same cluster group under the same PCF share same GMP link.In the networking process of group system reality, a common PCF is connected with one or more BSC, and therefore, according to the needs that system realizes, PCF also can only be that the call setup of same cluster group under the same BSC is shared the GMP link.Set up the processing of the shared GMP link of this kind and shown in Figure 3 basic identical, different is: step 301 is described to be judged as, and PCF judges whether that according to the sign of the BSC in the described A8 request for building link this A9-Setup-A8 message is the first time A8 request for building link of this cluster group under this BSC; The shared GMP link of this kind discharges to be handled with shown in Figure 4 also basic identical, different is: step 401 is described to be judged as, and PCF judges whether that according to the BSC sign that described A8 link discharges in the request this request is the last A8 request for building link under this BSC of this cluster group.

Wherein, the described shared link of above-mentioned Fig. 2 and Fig. 4 discharges to be handled and might not set up process based on Fig. 1 and the described shared link of Fig. 3, as long as PCF for erect in the call setup of same cluster group under the same BSC shared A8 link or for the same cluster multi call under same BSC or the PCF setting up shared GMP link, just can use the described method of Fig. 2 or Fig. 4 to discharge corresponding sharing A 8 links or GMP link.

Above-mentioned Fig. 1 and Fig. 3 describe the process of setting up of sharing A 8 links and shared GMP link in the inventive method respectively, also can set up sharing A 8 links and shared GMP link simultaneously in conjunction with the scheme of Fig. 1 and Fig. 3.Fig. 5 sets up sharing A 8 links and shared GMP link one preferred embodiment handling process schematic diagram in the inventive method, concrete processing and Fig. 1 and shown in Figure 3 basic identical, wherein:

Step 501 is to step 504: identical to the processing of step 104 with the described step 101 of Fig. 1.

Step 505 is to step 507: identical to the processing of step 303 with step 301 described in Fig. 3.

Step 508 is to step 510: identical with step 105 described in Fig. 1 to step 107, and can with above-mentioned steps 505 to step 507 executed in parallel.

Here, because for the user of same set group under the same BSC sets up sharing A 8 links, therefore when PCF receives the A8 request for building link, must also not set up upright GMP link for this cluster under this BSC, therefore, when the networking mode of system is the corresponding BSC of a PCF, when perhaps needing to share the GMP link for the call setup of same cluster group under the same BSC, the judgement of above-mentioned steps 505 then needn't be carried out; And, in such cases, because A8 link and GMP link have formed relation one to one for a PCF, therefore, when PCF distributes GMP chain line, in order to simplify processing, can be directly be that the newly assigned A8 Traffic of the A8 link ID that sets up of current request is as this GMP chain line with self or RM.

Utilize method shown in Figure 5 to set up after sharing A 8 links and the shared GMP link, the dispose procedure of these sharing A 8 links and shared GMP link is described identical with above Fig. 2 and Fig. 4, that is: BSC receives and promptly carries out sharing A shown in Figure 28 links after the call release request that MS sends and discharge and handle, PCF receives A8 link that BSC sends and discharges and promptly carry out shared GMP link shown in Figure 4 after the request and discharge and handle, the release of these two kinds of shared links can executed in parallel, and the present invention does not limit it and carries out sequencing.

But, if when set up sharing the GMP link as mentioned above: the networking mode of system is the corresponding BSC of a PCF, perhaps be that the call setup of same cluster group under the same BSC is when sharing the GMP link, when then discharging sharing A 8 links and shared GMP link, because the A8 link is corresponding one by one with the GMP link for a PCF, therefore, the judgement of step 401 shown in Figure 4 needn't be carried out, PCF can discharge request by forwarding step 402 described links after receiving A8 link release request, thus initiation GMP link dispose procedure.

Equally, the process of setting up based on described sharing A 8 links of Fig. 5 and shared GMP link is handled also not necessarily in the release of above-mentioned sharing A 8 links and shared GMP link, as long as PCF be under the same BSC call setup sharing A 8 links, and be that same cluster multi call just can adopt the mode of above-mentioned Fig. 2 and Fig. 4 combination to discharge shared A8 link and shared GMP link having set up the GMP link of sharing under same BSC or the PCF.

In sum, use the inventive method, can be call setup/release sharing A 8 links of same cluster group under the same BSC, and be that same cluster multi call under the same PCF is shared the GMP link foundation/release, thereby set up at trunked call and to save link circuit resource in the process, shorten calling establishment time delay, really realize the instant messaging characteristic of PTT business.

The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.All any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all be included in protection scope of the present invention.

Claims

1. the method for building up of shared link in the digital cluster system is characterized in that this method comprises:

A. after the base station controller BSC among the wireless access network RAN receives the trunked call request of setting up, judge whether current calling is that the trunked call first time of current calling cluster group under this BSC set up request, if, execution in step b then; Otherwise BSC adds current call information, process ends in the information of the A8 link of this calling cluster group correspondence;

2. method according to claim 1 is characterized in that, comprises Call Control Unit CC and rm-cell RM among the described BSC;

Described step a comprises: CC receives trunked call and sets up after the request, send the resource bid request to RM, RM judges according to this resource bid request whether current calling is this cluster group trunked call foundation for the first time request, if then RM indication CC sets up the A8 link, execution in step b, perhaps, RM distributes A8 chain line, returns this A8 chain line and gives CC, indication CC sets up A8 link, execution in step b; Otherwise RM adds current call information in the A8 link information of current calling cluster group correspondence, and indicates CC to need not to set up the A8 link, finishes to work as pre-treatment;

Described step b comprises: when CC received only the A8 link establishment indication of RM, CC sent the A8 request for building link to PCF, and this PCF distributes A8 chain line, and returned this A8 chain line by CC and give RM; When CC received A8 chain line that RM sends and A8 link establishment indication, CC sent and comprises the A8 request for building link of this A8 chain line to PCF.

3. method according to claim 2 is characterized in that, the method whether described RM indication CC sets up the A8 link is: RM indicates by the resource bid acknowledge message of returning to CC.

4. method according to claim 1 and 2 is characterized in that, sends the A8 request for building link to PCF at described BSC, and this method further comprises:

B1.PCF sends the shadowing agreement GMP of group request for building link to the PTT service server PS, and this PS distributes GMP chain line after receiving this GMP request for building link, and returns this GMP chain line and give PCF; Perhaps, PCF distributes GMP chain line, and this GMP chain line is included in the GMP request for building link is sent to PS.

5. method according to claim 4 is characterized in that, before described step b1, this method further comprises:

PCF judges whether the A8 link of current foundation is the A8 link that this cluster group is set up for the first time, if carry out described step b1; Otherwise PCF adds current call information in the information of the corresponding GMP link of this cluster group.

6. method according to claim 1 is characterized in that, this method further comprises:

7. method according to claim 6 is characterized in that, comprises CC and RM among the described BSC;

Described step c comprises: CC receives trunked call and discharges after the request, sends resource release request to RM; RM judges that according to this resource release request whether current calling is the last resource release request of this cluster group under self place BSC, if then RM discharges the corresponding A8 chain line of this calling, and indication CC discharges A8 link, execution in step d; Otherwise RM is the current call information of deletion from the A8 link information of this calling cluster group correspondence, finishes to work as pre-treatment;

Described steps d comprises: CC sends the A8 link release that comprises described A8 chain line and asks to PCF, and this PCF discharges this A8 chain line.

8. method according to claim 7 is characterized in that, the method whether described RM indication CC discharges the A8 link is: RM discharges acknowledge message by the resource of returning to CC and indicates.

9. according to claim 6 or 7 described methods, it is characterized in that after described PCF received A8 link release request, this method further comprised:

D1.PCF sends the release of GMP link and asks to PS, and this GMP link discharges the GMP chain line that request comprises the A8 link correspondence of current request release, and PCF and PS discharge this GMP chain line.

10. method according to claim 9 is characterized in that, before described steps d 1, this method further comprises:

PCF judges that whether the current A8 link that receives discharges request is that the last A8 link of this cluster group discharges request, if, execution in step d1 then; Otherwise PCF discharges the current call information of deletion the information of asking corresponding GMP link from this A8 link.

11. the method for releasing of shared link in the digital cluster system, sharing A 8 link transmission datas are adopted in the calling of same cluster group, it is characterized in that this method comprises:

12. method according to claim 11 is characterized in that, comprises CC and RM among the described BSC; This method specifically comprises:

CC receives trunked call and discharges after the request, sends resource release request to RM; RM judges that according to this resource release request whether current calling is the last resource release request of this cluster group under self place BSC, if, then RM discharges the corresponding A8 chain line of this calling, returning this A8 chain line gives CC and indicates CC to discharge the A8 link, CC sends the A8 link release that comprises described A8 chain line and asks to PCF, and this PCF discharges this A8 chain line; Otherwise RM is the current call information of deletion from the A8 link information of this calling cluster group correspondence, finishes to work as pre-treatment.

13., it is characterized in that after described PCF received A8 link release request, this method further comprised according to claim 11 or 12 described methods:

PCF sends the release of GMP link and asks to PS, and this GMP link discharges the GMP chain line that request comprises the A8 link correspondence of current request release, and PCF and PS discharge this GMP chain line.

14. method according to claim 13 is characterized in that, described PCF sends the GMP link and discharges and ask to the PS, and this method further comprises:

PCF judges whether the current A8 link that receives discharges request is the last A8 link release request of this cluster group, if then PCF transmission GMP link discharges and asks to PS; Otherwise PCF discharges the current call information of deletion the information of asking corresponding GMP link from this A8 link.